I got this working by setting every fan channel to pwm, including the fourth which is not in use.Then it was the classic power off completely>disconnect/reconnect the cables>power on. It's working as intended now with the fans adjusting speed based on a set point controller with delta T as the data source. I did order 3 Splitty9 actives to replace the Noctuas since a minimum speed cannot be maintained as designed without a potentiometer - explained the recent thread:
Aquaero 6 New PWM fans Set to 2000 RPM
Overall, my theory is that the overcurrent alarms were generated since the fan channels were operating in power controlled mode despite PWM controlled selected in Aquasuite. I verified by logging voltage output for each channel. Voltage fluctuated before when the issue occurred. Now, it is a constant 11.6V for the PWM signal as designed. Logging concurred once every fan channel was set to PWM controlled, including ch4 which was not in use. Anyway, it was a fun couple of weeks of off and on troubleshooting. I acquired the T30's in order to test the cooling capacity of my HL GTR 560's, which begin to shine with fan speeds over 2000rpm.
Aquasuite X.85 settings:
aquaero>Fans
Settings
Minimum power 0
Hold minimum power Off
Maximum power 100
Advanced settings
PWM controlled
Minimum rpm 0
Maximum power 2500
Use start boost Off
Programmable Fuse Off